1220956338 has 16 divisors (see below), whose sum is σ = 2790757440. Its totient is φ = 348844656.

The previous prime is 1220956333. The next prime is 1220956339. The reversal of 1220956338 is 8336590221.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1220956296 and 1220956305.

It is not an unprimeable number, because it can be changed into a prime (1220956333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14535153 + ... + 14535236.

It is an arithmetic number, because the mean of its divisors is an integer number (174422340).

Almost surely, 2^1220956338 is an apocalyptic number.

1220956338 is an abundant number, since it is smaller than the sum of its proper divisors (1569801102).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1220956338 is a wasteful number, since it uses less digits than its factorization.

1220956338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29070401.

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 1220956338 is about 34942.1856500134. The cubic root of 1220956338 is about 1068.8088582065.

The spelling of 1220956338 in words is "one billion, two hundred twenty million, nine hundred fifty-six thousand, three hundred thirty-eight".